Simply search a string in entire netbeans solution

If you click on the project in the projects pane.

Then press and hold Ctrl+Shift+H

A find and replace window will come up where you can specify what you would like to find and what to replace it with. You can use regular expressions and then after you search you can walk through all the results in the different files that are returned.

ctrl + shift + F is the shortest way.

You can define the wildcard there.

On the mac it is cmd + shift + f (but you have to select the project on the projects pane, otherwise it doesn't work) or Toolbar --> Edit --> Find in Projects.

Click - Edit - Find in Projects

or ctrl + shift + F

Can enter the containing text and the scope - Open Projects - Main Project - Selection